Table 1.

Firing properties of V1 neurons

	% Visually responsive neurons	Evoked response index		Orientation selectivity index		Normalized spontaneous firing rate
		Left eye	Right eye	Left eye	Right eye	Left eye	Right eye
Vehicle	99.05±1.9	0.73±0.046	0.62±0.18	0.75±0.10	0.69±0.12	0.65±0.17	0.59±0.30
U0126	99.80±0.52	0.71±0.12	0.67±0.06	0.72±0.05	0.67±0.06	0.57±0.17	0.61±0.17
CGP57380	99.26±1.2	0.78±0.09	0.71±0.14	0.72±0.07	0.75±0.05	0.51±0.24	0.52±0.27

Firing properties of V1 neurons were unaffected by U0126 and CGP57380. Average (±SD) firing properties of units recorded near to the site of drug infusion are shown. No significant differences were observed across drug treatments for any property. ERI, OSI, spontaneous firing rate: 1-way ANOVA P > 0.25; % visually responsive neurons: ANOVA on ranks P > 0.6; vehicle n = 7 hemispheres, U0126 n = 7, CGP57380 n = 6.